package com.fms.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.CorsConfigurationSource;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;

import javax.servlet.http.HttpServletRequest;

@Configuration
public class MyCorsConfig {

    @Bean
    public CorsFilter corsFilter() {
        // 1.添加CORS配置信息
        CorsConfiguration configuration = new CorsConfiguration();
        // 1) 允许的域,不要写*，否则cookie就无法使用了
        configuration.addAllowedOrigin("http://localhost:8080"); // 前端服务器地址
        // 2) 是否发送Cookie信息
        configuration.setAllowCredentials(true);
        // 3) 允许的请求方式
        configuration.addAllowedMethod("*"); // *表示允许所有方法
        // 4）允许的头信息
        configuration.addAllowedHeader("*");

        // 2.添加映射路径，我们拦截一切请求
        UrlBasedCorsConfigurationSource urlBasedCorsConfigurationSource = new UrlBasedCorsConfigurationSource();
        urlBasedCorsConfigurationSource.registerCorsConfiguration("/**", configuration);

        // 3.返回新的CorsFilter.
        return new CorsFilter(urlBasedCorsConfigurationSource);
    }

}
